ratchet wheel

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ratch′et wheel`

art at ratchet

a wheel, with teeth on the edge, into which a pawl drops or catches, as to prevent reversal of motion or convert reciprocating motion into rotatory motion.

[1770–80]

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Noun

ratchet wheel - toothed wheel held in place by a pawl or detent and turned by a lever

rachet, ratch, ratchet - mechanical device consisting of a toothed wheel or rack engaged with a pawl that permits it to move in only one direction

wheel - a simple machine consisting of a circular frame with spokes (or a solid disc) that can rotate on a shaft or axle (as in vehicles or other machines)

Translations

ratchet wheel

n → ruota dentata

Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995

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South Miami, FL, November 09, 2014 --(PR.com)-- An innovative new tool designed to greatly facilitate a common automotive repair task, the Ratchet Wheel, has been developed by Bradley Hamilton of Cincinnati, Ohio.

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A ratchet is a simple mechanical concept: To allow motion in one direction but not the other, a ratchet wheel contains teeth, between which a small lever, called a pawl, fits.

On why producing better results can be achieved only by ratcheting up performance: when trying to improve performance, you can't jump from the nadir of the results valley to the apex of the results mountain. You can only make it up one step at a time

A one-sided ratchet wheel with 36 teeth prohibits the automated erosion wheel from turning back.

Automated erosion wheel: a new measuring device for field erosion plots

That can be done by using the microscopic equivalent of a notched ratchet wheel that can rotate in only one direction.

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Gauges are operated by pressure on bellows and springs; on a diaphragm; a Bourdon tube; a helix; by a float in a manometer; a solenoid-operated ratchet wheel; by a multiple contact switch; or electronic signal.